Dev Tools · 17h ago
Vercel's mcp-handler 2.0 Supports Latest MCP Spec
Vercel released mcp-handler@2.0.0 with support for the 2026-07-28 Model Context Protocol specification and MCP TypeScript SDK v2. The update adds a stateless protocol with per-request metadata and a compatibility layer for older Streamable HTTP clients. It requires Node.js 20+ and zod4, and removes the deprecated HTTP+SSE transport.
Meridian48 take
This update signals the MCP ecosystem's shift toward stateless, serverless-friendly protocols, but the removal of SSE transport may force some teams to delay upgrades.
mcp-handlermodel-context-protocol